The detail on this incredible lineup of trucks and rally cars, the dramatic terrain and strikingly rendered weather... Holy crap, this jaw-dropping Storm Island trailer makes me want to rip my shirt off and take a race-prepped Ford Ranger off a jump. Which I could do if I got this game.

Forza proved they were committed to the with some great vehicles and dirt courses in the initial release, but this Storm Island expansion looks like it's taking the off-tarmac action to a whole 'nother level.

Here's one of the first off-road gameplay clips from upcoming-shortly Forza Horizon 2. It's…

Here's a gameplay clip of what they call "Rampage Mode," with commentary from the developers who made it happen:

And here's what the game's Creative Director Ralph Fulton calls "one of the most extreme races that we've ever had in the Forza franchise before:"

The Storm Island expansion pack will be available on XBox One has downloadable content starting December 16th, 2014.